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KMID : 0438219730100030757
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Korea University Medical Journal
1973 Volume.10 No. 3 p.757 ~ p.779
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A Study on Digestion and Absorption Rate of Nutrient in Korean Diet on Human Subject
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Abstract
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The experiment was carried out on 8 healthy female college-student 19-22 years old and they were fed three times a day with a test meals for 7 days of each experimental period. The test meals used were pulses protein diet, fishes protein diet and meat protein diet, and they supplied for each subject per day are as follows:
a) The pulses protein diet;
protein: 87.6g (pulses source: 45.8g)
fat: 41.1g (pulses source: 22.9g)
carbohydrate : 411.9g
calcium: 608.0mg (pulses source: 399.9mg)
phosphorus: 1, 083.3mg (pulses source: 497.5mg), and 2,367 kcal
b) The fishes protein diet;
protein: 88.1g (fishes source: 34.8g)
fat: 17.0g (fishes source: 3.2g)
carbohydrate : 446.2g
calcium: 442.4mg (fishes source: 114.1mg)
phosphorus: 1, 369.3mg (fishes source: 399.0mg), and 2,310 kcal
c) The meat protein diet;
protein: 87.6g (meat source: 40.2g)
fat: 25.9g (meat source: 6.3g)
carbohydrate: 431.7g
calcium: 360.6mg (meat source: 12.0mg)
phosphorus: 798.7mg (meat source: 41.6mg), and 2,358 kcal
The absorption rates of protein, fat, carbohydrate, calcium and phosphorus in each diet, and 17-ketosteroid excrcted in urine were determined.
The results obtained are summarized as follows:
1. The protein absorption rate of the pulses protein diet was lower than that of the fishes and meat protein diet.
2. The nitrogen balances in the pulses (+1.4±0.2g), fishes (+2.1±0.3g) and meat (+2.4±0.3g) protein diet were positive balances respectively.
3. The fat absorption rate of the fishes protein diet (60.9±2.6%) was significantly lower than that of the pulses and meat protein diet.
4. The carbohydrate absorption rates were 94.8±3.5~96.2±0.4% in each diet, and so it seems to be absorbed almost entirely but cellulose.
5. The calory utillization rates in each diet were 90.6±0.4~91.0±0.4%.
6. The calcium absorption rates of pulses protein diet (30.1±1.8%) were significantly lower than those of the fishes (52.5±2.5%) and meat protein diet (49.5±2.0%).
7. The phosphorus absorption rates of the pulses protein diet (45.9±2.3%) were significantly lower than those of the fishes (78.7±2.8%) and meat protein diet (81.3±2.2%).
8. The 17-ketosteroid contents excreted in urine of pulses protein diet (4.81±0.23mg) were higher than those of the fishes (3.76±0.18mg) and meat protein diet (3.30±0.12mg), but it showed no remarkable change of contents for each subject with the same diet.
In the view of the above results; it can be seen that the absorption rates of each nutrient were good in the meat protein diet, but the absorption rates of protein, calcium and phosphorus in the pulses protein diet and those of fat in the fishes protein diet were not so good, respectively.
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